1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
|
/* $OpenBSD: bus.h,v 1.10 1999/09/09 21:28:14 espie Exp $ */
/*
* Copyright (c) 1996 Niklas Hallqvist.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Niklas Hallqvist.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _AMIGA_BUS_H_
#define _AMIGA_BUS_H_
#include <machine/endian.h>
#ifdef __STDC__
#define CAT(a,b) a##b
#define CAT3(a,b,c) a##b##c
#else
#define CAT(a,b) a/**/b
#define CAT3(a,b,c) a/**/b/**/c
#endif
/* Bus access types. */
typedef u_int32_t bus_addr_t;
typedef u_int32_t bus_size_t;
typedef u_int32_t bus_space_handle_t;
typedef struct amiga_bus_space *bus_space_tag_t;
struct amiga_bus_space {
void *bs_data;
int (*bs_map)(bus_space_tag_t, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
int (*bs_unmap)(bus_space_tag_t, bus_space_handle_t, bus_size_t);
/* We need swapping of 16-bit entities */
int bs_swapped;
/* How much to shift an bus_size_t */
int bs_shift;
};
#define bus_space_map(t, port, size, cacheable, bshp) \
(*(t)->bs_map)((t), (port), (size), (cacheable), (bshp))
#define bus_space_unmap(t, bshp, size) \
(*(t)->bs_unmap)((t), (bshp), (size))
static __inline u_int8_t
bus_space_subregion(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
{
*nbshp = bsh + (offset << bst->bs_shift);
return (0);
}
static __inline u_int8_t
bus_space_read_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba)
{
return *(volatile u_int8_t *)(bsh + (ba << bst->bs_shift));
}
static __inline u_int16_t
bus_space_read_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba)
{
u_int16_t x =
*(volatile u_int16_t *)((bsh & ~1) + (ba << bst->bs_shift));
return bst->bs_swapped ? swap16(x) : x;
}
static __inline u_int32_t
bus_space_read_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba)
{
panic("bus_space_read_4: operation not allowed on this bus (tag %x)",
bst);
return 0;
}
#define bus_space_read_8 !!! bus_space_read_8 not implemented !!!
#define bus_space_read_multi(n, m) \
static __inline void \
CAT(bus_space_read_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) \
*buf++ = CAT(bus_space_read_,n)(bst, bsh, ba); \
}
bus_space_read_multi(1,8)
bus_space_read_multi(2,16)
bus_space_read_multi(4,32)
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 not implemented !!!
#define bus_space_read_region(n, m) \
static __inline void \
CAT(bus_space_read_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) { \
*buf++ = CAT(bus_space_read_,n)(bst, bsh, ba); \
ba += n; \
} \
}
bus_space_read_region(1,8)
bus_space_read_region(2,16)
bus_space_read_region(4,32)
#define bus_space_read_region_8 !!! bus_space_read_region_8 not implemented !!!
static __inline void
bus_space_write_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba,
u_int8_t x)
{
*(volatile u_int8_t *)(bsh + (ba << bst->bs_shift)) = x;
}
static __inline void
bus_space_write_2(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba,
u_int16_t x)
{
*(volatile u_int16_t *)((bsh & ~1) + (ba << bst->bs_shift)) =
bst->bs_swapped ? swap16(x) : x;
}
static __inline void
bus_space_write_4(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t ba,
u_int32_t x)
{
panic("bus_space_write_4: operation not allowed on this bus (tag %x)",
bst);
}
#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
#define bus_space_write_multi(n, m) \
static __inline void \
CAT(bus_space_write_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, const CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) \
CAT(bus_space_write_,n)(bst, bsh, ba, *buf++); \
}
bus_space_write_multi(1,8)
bus_space_write_multi(2,16)
bus_space_write_multi(4,32)
#define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!!
#define bus_space_write_region(n, m) \
static __inline void \
CAT(bus_space_write_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, const CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) { \
CAT(bus_space_write_,n)(bst, bsh, ba, *buf++); \
ba += n; \
} \
}
bus_space_write_region(1,8)
bus_space_write_region(2,16)
bus_space_write_region(4,32)
#define bus_space_write_region_8 \
!!! bus_space_write_region_8 not implemented !!!
#define bus_space_set_region(n, m) \
static __inline void \
CAT(bus_space_set_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t bs, CAT3(u_int,m,_t) val, size_t count) \
{ \
while (count--) \
CAT(bus_space_write_,n)(bst, bsh, bs++, val); \
}
bus_space_set_region(1,8)
bus_space_set_region(2,16)
bus_space_set_region(4,32)
#define bus_space_set_region_8 \
!!! bus_space_set_region_8 not implemented !!!
/* OpenBSD extensions */
static __inline void
bus_space_read_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, u_int8_t *buf, bus_size_t cnt)
{
u_int16_t *buf16 = (u_int16_t *)buf;
while (cnt) {
u_int16_t x = *(volatile u_int16_t *)
((bsh & ~1) + (ba << bst->bs_shift));
*buf16++ = bst->bs_swapped ? x : swap16(x);
cnt -= 2;
}
}
static __inline void
bus_space_read_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, u_int8_t *buf, bus_size_t cnt)
{
panic("%s: operation not allowed on this bus (tag %x)",
"bus_space_read_raw_multi_4", bst);
}
#define bus_space_read_raw_multi_8 \
!!! bus_space_read_raw_multi_8 not implemented !!!
static __inline void
bus_space_read_raw_region_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, u_int8_t *buf, bus_size_t cnt)
{
u_int16_t *buf16 = (u_int16_t *)buf;
while (cnt) {
u_int16_t x = *(volatile u_int16_t *)
((bsh & ~1) + (ba << bst->bs_shift));
*buf16++ = bst->bs_swapped ? x : swap16(x);
ba += 2;
cnt -= 2;
}
}
static __inline void
bus_space_read_raw_region_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, u_int8_t *buf, bus_size_t cnt)
{
panic("%s: operation not allowed on this bus (tag %x)",
"bus_space_read_raw_region_4", bst);
}
#define bus_space_read_raw_region_8 \
!!! bus_space_read_raw_region_8 not implemented !!!
static __inline void
bus_space_write_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, const u_int8_t *buf, bus_size_t cnt)
{
const u_int16_t *buf16 = (const u_int16_t *)buf;
while (cnt) {
*(volatile u_int16_t *)((bsh & ~1) + (ba << bst->bs_shift)) =
bst->bs_swapped ? *buf16 : swap16(*buf16);
buf16++;
cnt -= 2;
}
}
static __inline void
bus_space_write_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, const u_int8_t *buf, bus_size_t cnt)
{
panic("%s: operation not allowed on this bus (tag %x)",
"bus_space_write_raw_multi_4", bst);
}
#define bus_space_write_raw_multi_8 \
!!! bus_space_write_raw_multi_8 not implemented !!!
static __inline void
bus_space_write_raw_region_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, const u_int8_t *buf, bus_size_t cnt)
{
const u_int16_t *buf16 = (const u_int16_t *)buf;
while (cnt) {
*(volatile u_int16_t *)((bsh & ~1) + (ba << bst->bs_shift)) =
bst->bs_swapped ? *buf16 : swap16(*buf16);
buf16++;
ba += 2;
cnt -= 2;
}
}
static __inline void
bus_space_write_raw_region_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_size_t ba, const u_int8_t *buf, bus_size_t cnt)
{
panic("%s: operation not allowed on this bus (tag %x)",
"bus_space_write_raw_region_4", bst);
}
#define bus_space_write_raw_region_8 \
!!! bus_space_write_raw_region_8 not implemented !!!
static __inline int
bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart, bus_addr_t rend,
bus_size_t size, bus_size_t alignment, bus_size_t boundary,
int cacheable, bus_addr_t *bpap, bus_space_handle_t *bshp)
{
/* XXX Always fail for now. */
return (1);
}
static __inline void
bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
{
/* XXX Nothing here yet. */
}
/* let MI code be happy */
typedef void *bus_dmamap_t;
#endif /* _AMIGA_BUS_H_ */
|
